They were both able to play with the fish on a stick last night together with no issue. It just seems to be when Enzo wants to cuddle with me Èowyn no longer likes it. It just started this past week.I know you are unused to this because your cats are generally so unbelievably good natured. However, cats generally don't like to share.
The way my four figure it out is that they own different parts of the house. So if I am at my desk I am owned by one cat. On the sofa there are two that share me. In bed a different two share me.
It sounds confusing but they seem to understand how it works and I just cuddle whoever is willing to be cuddled.
You are right. This is totally new to me.